Coinsurance
Predetermined percentage of medical costs paid by an individual after yearly deductible costs are met. Note: This form of medical cost sharing requires an insured person to pay a stated percentage of medical expenses after the deductible amount, if any, is paid. After any deductible amount and coinsurance are paid, the insurer is responsible for the rest of the reimbursement for covered benefits, up to the maximum allowed charges. The individual is responsible for any charges in excess of what the insurer determines to be “usual, customary, and reasonable.” Coinsurance rates may differ between services received from an approved provider and those received from providers not on the approved list.